PN3Y72148-1Frequency Hopping Spread Spectrum Transceiver

RF-TWACS Based AMR System Application Notes Revision 1 a product of Distribution Control Systems, Inc. Confidential and Proprietary Copyright 2001- 2003. All Rights Reserved PROPRIETARY NOTICE The information contained in this document is private to Distribution Control Systems, Inc., St. Louis, Missouri (DCSI). This information may not be published, reproduced, or otherwise disseminated without the express written authorization of DCSI. Any software or firmware described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license. DISCLAIMER The information in this document is subject to change without notice and should not be construed as a commitment by DCSI. DCSI assumes no responsibility for any errors that may appear in this document. No responsibility is assumed for the use or reliability of software on equipment that is not supplied by DCSI. TWACS is a registered trademark of Distribution Control Systems, Inc., St. Louis, MO. COMPANY CONFIDENTIAL RF-TWACS Based AMR System DCSI CUSTOMER PRODUCT SPECIFICATION May 30, 2003 Application Notes – Rev. 1 ii This page intentionally left blank COMPANY CONFIDENTIAL RF-TWACS Based AMR System DCSI CUSTOMER PRODUCT SPECIFICATION May 30, 2003 Application Notes – Rev. 1 iii TABLE OF CONTENTS 1 AUDIENCE...............................................................................................................................................................1 2 INTRODUCTION.....................................................................................................................................................1 2.1 BASIC CONCEPTS..............................................................................................................................................1 2.2 BENEFITS...........................................................................................................................................................1 2.3 PRINCIPLES OF OPERATION..............................................................................................................................1 3 SYSTEM NOMENCLATURE................................................................................................................................4 4 SYSTEM OVERVIEW.............................................................................................................................................8 4.1 GENERAL SYSTEM THEORY OVERVIEW............................................................................................................8 4.2 RF HARDWARE SPECIFICATIONS, INSTALLATION, OPERATIONS & MAINTENANCE........................................9 4.2.1 Centron Meter.......................................................................................................................................9 4.2.1.1 Initial Installation and Change-outs.........................................................................................11 4.2.2 Remote Meter (gas/water) Transceiver (RMTR)........................................................................11 4.2.2.1 RMTR Specifications....................................................................................................................11 4.2.2.2 Initial Installation and Change-outs.........................................................................................12 4.2.2.3 RMTR Operations..........................................................................................................................12 4.2.2.4 RMTR Maintenance.......................................................................................................................14 4.2.3 Electric Meter Transceiver (EMTR)...............................................................................................14 4.2.3.1 EMTR Specifications....................................................................................................................14 4.2.3.2 Initial Installation and Change-outs.........................................................................................15 4.2.3.3 EMTR Operations..........................................................................................................................15 4.2.3.4 EMTR Maintenance.......................................................................................................................16 4.2.4 Hand-Held Transceiver (HHTR) – Verification and Installation Tool...................................16 4.2.4.1 HHTR Specifications....................................................................................................................16 4.2.4.2 HHTR Operation.............................................................................................................................17 4.2.4.2.1 RMTR Configuration.....................................................................................................................18 4.2.4.2.2 RMTR Network Insertion......................................................................................................18 4.2.4.2.3 EMTR Installation..................................................................................................................19 4.2.4.2.4 Site Survey..............................................................................................................................19 4.2.4.2.5 Transceiver Equipment Diagnostics................................................................................20 4.2.4.2.6 Installation Data Collection.................................................................................................20 4.2.4.2.7 Other HHTR Applications....................................................................................................20 4.2.4.3 HHTR Maintenance.......................................................................................................................20 4.3 RF-TWACS SYSTEM SOFTWARE – CENTRAL COMMUNICATION EQUIPME…

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International EMC Services 333 Pfingsten Rd Northbrook, Illinois 60062-2096 United States Country Code (1) (800) 873-8536 (847) 272-8800 FAX No. (847) 272-8864 March 31, 2009 Federal Communication Commission Equipment Authorization Division Application Processing Branch 7435 Oakland Mills Road Columbia, Maryland 21046 Subject: Request for 731 form correction FCC ID: PN3Y42148-1 To Whom It May Concern: This is to inform that incorrect information was submitted on the 731 form. The FCC ID in the 731 form is incorrect. The correct FCC ID should be PN3Y72148-1. All exhibits found in filing show correct FCC ID. Only 731 form needs correction. This was due to error during submission online to the FCC. Sincerely, Michael Ferrer Project Engineer EMC International Services Underwriter's Laboratories (847) 664-1312 (Direct) (847) 407-1312 (Fax)

External Photographs FCC ID: PN3Y72148-1 EMTR HHTR RMTR

Radiometrics Midwest Corporation (815) 293-0772 – www.radiomet.com Page 1 of 5 Operational Description FCC ID: PN3Y72148-1 1 GENERAL DESCRIPTION The EUT consists of three products EMTR, RMTR, and the HHTR. All three products are capable of communicating with each other, so by necessity all RF parameters such as modulation type, data rate, channel frequencies, etc. are the same in each. During a communications session, one radio is the master and one radio is the slave. Master radios determine the hop sequence, while slave radios follow. In the case of an EMTR <> RMTR session, the EMTR is the master. For an EMTR <> HHTR session, the HHTR is the master, and for a RMTR <> HHTR session, the HHTR is the master. In no case is the RMTR a master. The antenna is permanently attached to the PCB and the Antenna is internal on all three EUT’s. Therefore it meets the 15.203 Requirement. 1.1 System overview The RF link between TWACS transceivers uses a range of frequencies between 902 MHz and 928 MHz. This range is divided into 79 channels. Fifty channels are needed to satisfy the FCC’s minimum channel set requirements, so 50 of the 79 were chosen for use. Five of these 50 channels are reserved for link acquisition and the other 45 are used for link maintenance (packets transmitted after a link has been acquired). The acquisition channels are spaced evenly throughout the upper end of the 50-channel set. The 45 link maintenance channels are used in a random manner while a link is active between transceivers. The radio transceivers are equipped with folded dipole antennas. Folded dipoles were chosen because of their broader radiation pattern as compared with regular dipoles, this guarantees a better radio coverage under a variety of field installation conditions utilities may find. Operationally, TWACS transceivers can play one of two roles during an RF session: A transceiver that requests a link is the requestor transceiver; a transceiver that replies to that request is an acceptor transceiver. TWACS transceivers can be characterized by their roles as shown in Table 1: Table 1 – Roles of DCSI’s Radio Transceivers Transceiver Type Can request a link from Can grant a link to EMTR Acceptor None an RMTR or an HHTR RMTR Requestor an EMTR or an HHTR None HHTR Both an EMTR an RMTR As can be seen, EMTRs never request a link; they are always acceptor transceivers. By contrast, RMTRs never grant a link; they are always requestor transceivers. The HHTR, since it must be able to communicate with both EMTRs and RMTRs, can act as either an acceptor transceiver (with an RMTR) or a requestor transceiver (with an EMTR). The reason this distinction is important is that the acceptor transceiver always controls the channels hop sequence. This means that an EMTR always controls the hop sequence. An HHTR controls the sequence when communicating with an RMTR. An RMTR never controls the hop sequence. Bear in mind that this distinction between acceptor and requestor transceivers is strictly operational. It is not a functional difference because the same RF transceiver and RF engine code are used on all transceivers. Deleted: ¶ Deleted: ¶ The RMTR is a battery-powered device. In order to maximize battery life, the RMTR is powered off as much as possible. The requirement to maximize battery life drives a number of other factors in the system. One implication of this is that the normal Master/Slave relationship, evident throughout the design, which begins at the CCE, now ends at the EMTR. The EMTR cannot wake up the RMTR to establish a session, but can take control of a session once it is established by the RMTR. The RMTR is designed to wake up once an hour and create a session with an EMTR. Any unknown data is uploaded at that time from the RMTR to the EMTR. At any given time, the EMTR knows nearly everything the RMTR knows, plus it maintains engineering data to describe the quality of the radio link. The CCE may access this data upon demand. The EMTR maintains an “acquisition list” table. Each RMTR is categorized as belonging to a certain type of service. The various types are: Electric, Water, Gas, and Propane. A number of ports are supported for each service type. The CCE reads data from the appropriate port in order to obtain information . The RMTR unit wakes up once an hour to take a reading from a wired encoder. The encoder's reading as well as the unit's serial number determines when the RMTR will attempt to transfer that reading via RF to an EMTR. At the calculated time interval (anywhere from 10 to 25 minutes past the above reading time), the RMTR wakes up again and attempts to contact an EMTR. If the contact is successful, the data is transferred. This occurs on multiple channels and is less than 1 second in total on-air time. The system does not have any retry capability *during* a session, so the session time can be less than 1 second total in the event of a data error in a packet. If the contact is not successful or a data error occurs, the RMTR sleeps for 10 minutes and tries again. There are at most 4 attempts to contact an EMTR during any given hour. There are no ongoing sessions. All sessions are less than one second in length, and always occur over multiple channels. It is not possible to violate the 400mS in 20 second rule because the hop sequence never repeats during a session. 1.2 System Receiver Input Bandwidth System Receiver Input Bandwidth: The receiver employs a ceramic filter to limit the receive noise bandwidth to approximately 1.5 times the width of the transmitted signal. This is a practical value based on component tolerances and allowances for drift. 1.3 System Receiver Hopping Capability System Receiver Hopping Capability: Every transmitted packet from a master radio has a byte reserved for "next channel". The receiver uses this value to shift frequencies (channels) in synchronization with the master radio. 1.4 Section 15.247(g) and (h) Hopping Requirements The synthesizer in the units is capable…

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Radiometrics Midwest Corporation Page 1 of 30 Electromagnetic Compatibility Test Report Tests Performed on a DCSI Wireless Meter Reading System, Model EMTR, RMTR and HHTR Radiometrics Document RP-5033 Product Detail: FCC ID: PN3Y72148-1 Equipment type: Frequency Hopping 902 to 928 MHz Transciever Test Standards: US CFR Title 47, Chapter I, FCC Part 15 Subpart C FCC Part 15 CFR Title 47: 2002 Industry Canada RSS-210, Issue 5 as required for Category I Equipment This report concerns: Original Grant for Certification FCC Part 15.247 RSS-210 (o) (a) Tests Performed For: Test Facility: DCSI 5657 Campus Pkwy. Hazelwood, MO 63042 Phone: (314) 895-6505 Radiometrics Midwest Corporation 12 East Devonwood Romeoville, IL 60446 Phone: (815) 293-0772 e-mail: [email protected] Test Date(s): (Month-Day-Year) May 14 to 16, 2003 Document RP-5033 Revisions: Rev. Issue Date Affected Pages Revised By Authorized Signature for Revision 0 June 4, 2003 1 June 23, 2003 Joseph Strzelecki Deleted: 30 Inserted: 30 Deleted: 4 Inserted: 4 Deleted: 3 Inserted: 3 Deleted: 29 RADIOMETRICS MIDWEST CORPORATION - EMC Test Report Equipment Tested (Company, Model, Product Name): Document No.: Page: DCSI, EMTR, UHF Ttransmitter RP-5033 Rev. 0 2 of 28 Table of Contents 1 ADMINISTRATIVE DATA ................................................................................................................... 3 2 TEST SUMMARY AND RESULTS .....................................................................................................3 2.1 RF Exposure Compliance Requirements ..................................................................................... 4 3 EQUIPMENT UNDER TEST (EUT) DETAILS .................................................................................... 4 3.1 EUT Description ........................................................................................................................... 4 3.1.1 FCC Section 15.203 Antenna Requirements......................................................................... 4 3.2 Related Submittals ....................................................................................................................... 4 4 TESTED SYSTEM DETAILS .............................................................................................................. 4 4.1 Tested System Configuration ....................................................................................................... 4 4.2 Special Accessories ..................................................................................................................... 5 4.3 Equipment Modifications .............................................................................................................. 5 5 TEST SPECIFICATIONS AND RELATED DOCUMENTS.................................................................. 6 6 RADIOMETRICS’ TEST FACILITIES .................................................................................................6 7 DEVIATIONS AND EXCLUSIONS FROM THE TEST SPECIFICATIONS......................................... 7 8 CERTIFICATION ................................................................................................................................ 7 9 TEST EQUIPMENT TABLE ................................................................................................................ 7 10 TEST SECTIONS ............................................................................................................................. 7 10.1 AC Conducted Emissions; Section 15.207................................................................................. 7 Figure 1. Conducted Emissions Test Setup.................................................................................... 9 10.2 Carrier Frequency Separation .................................................................................................... 9 10.3 Number of Hopping Frequencies .............................................................................................11 10.4 Time of Occupancy (Dwell Time) .............................................................................................13 10.5 Occupied Bandwidth (20 dB)....................................................................................................15 10.6 Peak Output Power ..................................................................................................................16 10.7 Band-edge Compliance of RF Conducted Emissions ..............................................................17 10.8 Spurious RF Conducted Emissions..........................................................................................19 10.9 Spurious Radiated Emissions ..................................................................................................22 10.9.1 Radiated Emissions Field Strength Sample Calculation....................................................23 Figure 2. Drawing of Radiated Emissions Setup ..........................................................................24 10.9.2 Spurious Radiated Emissions Test Results (Restricted Band) ..........................................24 Notice: This report must not be reproduced (except in full) without the written approval of Radiometrics Midwest Corporation. Deleted: 14 Deleted: 15 Deleted: 16 Deleted: 18 Inserted: 18 Deleted: 17 Deleted: 21 Inserted: 21 Deleted: 20 Deleted: 22 Inserted: 22 Deleted: 20 Deleted: 23 Inserted: 23 Deleted: 21 Deleted: 23 Inserted: 23 Deleted: 21 Deleted: ¶ RADIOMETRICS MIDWEST CORPORATION - EMC Test Report Equipment Tested (Company, Model, Product Name): Document No.: Page: DCSI, EMTR, UHF Ttransmitter RP-5033 Rev. 0 3 of 28 1 ADMINISTRATIVE DATA Equipment Under Test: A DCSI, Wireless Meter Reading System Model: EMTR, RMTR and HHTR The EMTR has a Serial Number: 990473 This will be referred to as the EUT in this Report Date EUT Received at Radiometrics: (Month-Day-Year) Test Date(s): (Month-Day-Year) May 14 2003 May 14…

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Test Setup Photographs FCC ID: PN3Y72148-1 Photographs of Radiated Emissions Test Setup RMTR HHTR HHTR EMTR (ANSI C12.1 Setup) EMTR (ANSI C63.4 Setup) Photograph of RF Conducted Tests Photographs of Conducted Emissions Test Setup HHTR HHTR HHTR (ANSI C12.1 Setup) EMTR (ANSI C63.4 Setup)